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v J EREMIAH STEVER AND J. A. WAY, 0F BRlSTOL, NEGTIG'UT, ASSIGNORS T0JOHN H. SESSIONS, OFTHE SAME PLAGE. Lam Patent ivo. 61,111, ma Janna-ys, 18ct.

IMPROVEMENT IN WOOD LATHES FOR TURNING KNOBS.

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TO ALL WHOM I'i MAY CONCERN:

Beit known that we, .IEREMIAH S'rEvER and Jenn A. WAY, of Bristol,county of Hartford., and State of Connecticut, have invented a certainnew and useful Improvement in Machines for Manufacturing FurnitureKnobs, Src.; and to enable others skilled in the art to make and use thesame, we will proceed to describe, by referring to the drawings, inwhich the same letters indicate like parts in each cf the figures.

The nature of this invention consists, or rather it will beunderstood,from the speciiication and drawings, the object of which is to greatlyfacilitate the manufacture, produce uniformity of shape and proportion',and thereby produce a cheaperand better article. In the. accompanyingdrawings- Figure 1 is a front elevation. i l

Figure 2 is a right-hand end elevation.

Figure 3 is a left-hand end elevation.

Figure 4 is a back sideA elevation.

Figure 5 is a top or plan view.

A. is the framework to or upon which the mechanism is arranged. Bl isthe driving-shaft, having a pulley,

a, to which the power is applied, by means of a. belt, to give impetusto tlie machine. B2 is a cam-shaft which receives its motion from(indirectly) the pulley b, on the driving-shaft B1, through the .stud orloose pulley c, which has a pinion gear, CZ,l secured thereto, whichworks into the large gear d', upon the outer end of the shaft B2. C is askeleton cylinder secured upon the front end of the shaft B3. D arespindles, having sockets in the front ends thereof, for the reception ofproper dogs or holders for holding the blank or block from which theknob is to be made by the machine; these spindles are made much intheusual way of making lathe spindles, alte. These spindles are arranged inbearings formed in the rim of the cylinder C, having pulleys, E, ofabout uniform size; these spindles are operated alternately by a belt,or its equivalent, which passes over the pulleys E from the pulley F,which is securedon one end of the driving-shaft B1.' Gr is a bracket,made in the form of' a segment of a circle, and a little larger than thediameter of the cylinder C, which is rmly secured to the framework A,and otherwise of such shape and proportion as to secure strength andfirmness thereto during the operation of the machine. Upon the face ofthis bracket, Gr, are arranged studs, H, 1 2 3 5, the faces of which areof about equalor corresponding distances from each other, and with thecentres of the spindles D in 01' upon the faceof these studs, H, arearranged the tool-stocks I, the object of which is to holdproperly-formed or shaped tools for cutting or forming the blank orblock into the required shape knob, which (the tool) is secured thereoni'n any of the common ways. These stocks are actuated back and forth, upto the blank, successively 0r simultaneously, as may be desirable, bythe actionof the cams J', or their equivalent, arranged upon the backside of the bracket G, by proper guide-ways, so as to secure a rm andeasy motion thereof, and so as to be actuated by any proper mechanismarranged toproduce a corresponding motion thereof with the cylinder C. Lis an arm extending fromthe framework outward in front of the ends ofthe spindles D, upon which is arranged a presser-bar, a, the object ofwhich is to press the blank firmly upon the dogs or holders, which aretted into the sockets of the spindles D, and is operated by a blowagainst the outer end thereof, (the bar a,) or bymeans of a hand-lever,b. M is a clearer` clutch, secured upon the outer end of the spindle N,having its bearings in the framework A, so as to allow of both a lateral,and'vibratory'motion thereof. The object of this clutch is to removethe knob, by an independent self-acting motion of' the clutch M, fromthe spindle dog, by receiving it (the dog) between its prongs, while theprongs themselves pass (as` the cylinder or spindles move from oneresting point to another) between the ends ofthe spindles D andthelnished knob, when by the joint action 0f the lever O and cam P, ortheir equivalents, upon the spindle N, will remove the knob from thedog, in readiness to receive another block. On the back end ofthe shaftB3 is secured a notch-wheel, Q, having the same number of "notches ordepressions in the edge thereof as there are spindles in the wheel C. Ris a ratchet-bar. R2 is a leek-bak, which throws the bolt S into ordraws it out of the notches in the wheel Q; these bars or shafts, R `andR, are operated to perform their proper functions by means of the cam-T1. U1 'is a lever whichmoves the trimming stock I2, Aand-is actuated bythe cam T3. U3 is a lever which operates, through its properconnections, the segment camplate K, and is actuated bythe cam T4.

Novi2 in lputting this machine, in operation, take a block, out theproper size, first having a hole made therein to receive the dog orholder which is ittedto the sockets of the spindles; D, place it uponthe dog justl back of the presser L, and'by the aid thereof (thepresser) force it firmly on to the dog, one after the other, as often asthe movement of the cylinder, and as the block, by the action ormotionof the cylinder, comes against the tool-stock, the tool thereon iscompressed todo its appointed work, or its portion of the Work; thenceVforward to the next toohsnecessively, until the knob is completed andthrown from the dog, by the uniform and repeated action of therespective parts, as above described. Each spindle, while rapidlyrevolving with its block, is brought directly to theraetionl 4of thetools arranged upon the`-tool- Stocks I, 1 2 3 3ro., so that each mayperform its respective portion oi` the Work nearly at the same instantof time. And as the spindle holding the finished knob :novos along nearto the clutch, the clutch M wili'enter astride of thedog, between theend of the spindio D and the knob, and by the joint action of the leverO and cam P, the spindle N, with the clutch M', will be thrust forward,and the knob removed from the dog thereby.` This operation will berepeated sixteen times' (more or less, according to the number ofspindles, D, used in a machine) during each revolution of the cylinderC. It will be particularly noticeable that the device which operates the`cutting tools is designed to move or to actuate the stocks I towards'the spindles D, at-or nearly at the same instant of time, and alsobetween eaehperiodical movement of the cylinder, during` eachrevolution. We believe we have thus shown the nature, construction, andoperation, so as to enable others skilled to make and use the sametherefrom.. v I

What Weolaim, therefore, and desire to secure by Letters Patent,is-ff 1. We elaimtho cylinder C, incombination with the notch-'wheel Q,ratchet-bar R, loek-bar R2, bolt S, and actuating pin-.cam T1, for theprposc of giving `a periodical movement to said cylinder C,substantially as described. 2. We claim the tool-stocks I, 2 3 4 5 7, incombination with the earns J, arranged upon the plate K, lever U3, withits connecting arms actuated by the cam Ti, substantially as and for thepnrpose described.

3. We claim the clearer cclntehM, in combination with the lever O, andcam P, vibrating spindle N, subv stantially' as'and 'for thepnrposedoscribcd.

A 4. We claim organizing in one machine the above enumerated successiveoperations for turning, finishing, and clearing the knobs from themachine ,as described, `when arranged and oporatingsubstantially as setforth.

' JEREMIAH STEVER, [1.. y

JOHN A.. WAY. 3.]

Witnesses; I

S. P. Niewnnn, CHARLES SMITH.

